Limonite
FeO(OH)·nH2O
mineral
Category
Mineral (Pseudomorph)
Browse mineral (pseudomorph) specimens identified by the Rock Identifier community.
Learn about Mineral (Pseudomorph) in the encyclopedia
View all →
Limonite / Goethite Ironstone Concretion
FeO(OH)·nH2O (Hydrated Iron Oxide)
mineral
Quartz (Druzy)
Silicon Dioxide (SiO2)
mineral
Ruby (Raw Corundum)
Corundum (Al2O3) with Chromium traces
mineral
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic Extrusive volcanic rock)
igneous
Basalt with Amygdule
Aphanitic Mafic Volcanic Rock (Basalt) with Zeolite/Quartz Infill
igneous
Granite
Intrusive Felsic Igneous Rock
igneous
Banded Gneiss
Gneiss
metamorphic
Pyrite
Iron Pyrite (FeS2)
mineral
Eudialyte
Na15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
mineral
Granite
Phaneritic Felsic Igneous Rock
igneous
Pegmatite
Pegmatite (felsic intrusive igneous rock)
igneous
Botryoidal Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Mixed Mineral Collection (Quartz, Amethyst, Rose Quartz, Pyrite, etc.)
Mixed Silicates and Sulfides (SiO2, FeS2)
mineral
Sandstone with Ironstone Concretion
Arenite with Ferruginous Cement
sedimentary
Granite
Intrusive Igneous Rock (composed of quartz, alkali feldspar, and plagioclase)
igneous
Limonite Sandstone
Ferruginous Sandstone (Hydrated Iron Oxide)
sedimentary
Malachite
Copper Carbonate Hydroxide (Cu2CO3(OH)2)
mineral
Malachite
Malachite (Cu2CO3(OH)2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss
metamorphic
Sandstone with Quartz/Calcite druse
Arenite with druse (SiO2 or CaCO3)
sedimentary
Limonite Ironstone
Goethite-Limonite concretion / Iron oxide
sedimentary
Basalt with Vesicular/Amygdaloidal Alteration
Extrusive Igneous Rock (Mafic)
igneous
Epidote
Calcium aluminum iron silicate (Ca2(Al, Fe)3(SiO4)3(OH))
mineral
Epidote
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Gypsum (Selenite sand)
Calcium sulfate dihydrate (CaSO4·2H2O)
mineral
Fluorite on Host Rock
Calcium Fluoride (CaF2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Blue Apatite
Calcium phosphate mineral, Ca5(PO4)3(F,Cl,OH)
mineral
Gneiss (Metamorphic Pebble)
Gneiss (SiO2-rich metamorphic rock)
metamorphic
Diorite
Diorite (Phaneritic intermediate plutonic rock)
igneous
Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Gneiss
Gneiss
metamorphic
Granite
Granite (Felsic Plutonic Rock)
igneous
Granodiorite
Granodiorite
igneous
Banded sandstone pebble
Quartz-rich lithic sandstone; exact provenance and composition require testing
sedimentary
Pink Granite (Unakite-bearing or Epidote-bearing Granite)
Plutonic Igneous Rock (Granite)
igneous
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic